. >>> new york city police say a woman pushed a man in front of a subway train killing him, and now they are trying to track that lady down. witnesses say before the train pulled into the station the woman was pacing back and forth on the platform, talking to herself, and as the train rolled in, she pushed that man out in front of it and ran away. the victim was pinned as the train came to a stop. this is the surveillance video. you can see the woman that police believe may be the suspect, running from the scene. geed you indicators all over the nation are still thinking about the newtown tragedy but one state's teachers are doing a lot more than just think. we'll explain later. >>> but up next, chicago reached a bub i couldn't say mail stone -- a dubious milestone. we'll tell you about it after the break. >>> so far this year afghanistan has had fewer troop casualties than chicago has had murders. chicago reached a total of 500 homicides last night when a 40- year-old man was shot in the head while standing outside a convenience store. according to i-casualties.org only 309 troops have